Process for the distillation of natural resins and oleoresins



' powder,

Patented Feb. 9; 1926. i

A 1,572,766 UNITED STATES PATENT OFFICE- JOSEPH KAB IE'ALPHONSE CHEVALIEB, PAUL. IBO'UBCET, AND HENRI BEGNAULT, 0]? i PABIS, FRANCE. i

rnocnss son was ms'rnmn'rronor NATURA nnsms AND onnonnsms.

No Drawing.

To all whom it may concern:

Be it known (that we, ALPHoNsn CHEVAIJER, PAUL Bouncer, and HENRI REGNAULT, citizens of France, and residing. in Paris, France, have invented a Process for the Distillation of ll'atural Resins and-Oleoresins, of which the following is a full, clear, and exact description.

The distillation of natural resin was industrially carried out up to cording to Deves process, portant modifications; v This method of distillation in proportion as the temperature rises gives, in addition to, a small quantity of water and fluid resin oil, products more and more viscous and colored the relative proportions of; which vary with the duration of the heating, its intensity and its rapidity, and leaves, as a final fixed residue, either pitch or carbon.

The rate of distillation and the nature of the products resulting therefrom are quite different when, instead of distilling pure resin, other bodies are added thereto. y In particular, resin has already been distilled in presence of quick lime, soda, zinc without however any marked advantages; it has also been shown that die tillation in the resen'ce of variouskinds of salts; whether a ali, neutral or acid salts, is

not sensibly modified. Y a

The present invention has for its object a process of distillation of naturalresins or oleo resins as being the gum of the pine tree, of the Canadian balsam, the balsam of Peru, or colophony, a smaller elevation of temperature, products different from those 'ven by dry distillation or distillation eected in presence of the bodies used up to now. 1 i

This rocess is essentially characterized by the act that the distillation of natural resins or oleo resins .is carried out 1 in presence of any tribasic acid. Owing to the presence of this tribasic acid, the distillation 'of natural resins or oleo resins transforms the latter into two liquid product's: one, which distills, ma be used as a substitute for turpentine oi and maybe employed as a carburetting agent for alcohol, the other, which does not distill, is a resin oil havin particular properties such as low viscosity and no acidity, or odor, which difierentiates it clearly from J osnrrr Mann:

this day, ac-.- without imin order to obtain with Application w my 17,1 22. sum m. 1,740.

resin oils which can be obtained by the actual known processes of distillation, which latter resin oils are viscous, acid and odoriferous.

By way of explanation, a method of carrying out the present processwill. now be given.

' To the natural resins or oleo resins as being thegum of the pine tree,.of the Canadian balsam" tree and of the balsam tree of Peru, colophony is added from. 1 to 5% of. a concentrated tribasic acid, preferably concentrated phosphoric acid and the natural resins or oleo resins is distilled over a flame; the temperature is progressively raised until the vapors reach about 310 centigrade."

The distillation, carried out in these conditions, gives a proximately:

A8% of a lig t oil which is distilled and condensed, capable of being used as a substitute forturpentine oil.

45% of a residue composed of a reddish fluid oil with greenish reflections, having a low viscosity and without acidity or odor, and

p 5% of acid water. Water. containing acid is distilled with the light oil and is then condensed and separated.

Our process of distillation oifers the main following advantages:

-1. High rate of distillation. r

2. Use of apparatus of small weight the cost of which for construction, erection and heating is less than that of the apparatuses now employed for obtaining resin oil.

3. Production of a volatile liquid capable of replacing turpentine oil in numerous applications.

4. Utilization of this liquid wholly or partly, for carburetting alcohol.

5. Production of a new resin oil which need not be distilled again and possessing particular" roperties and qualities.

6. Trans ormation of dry resinous products into liquid products with yields greater than those capable of being obbe understood that the proporwith from 1 to 5%of tribasic phosphoric acid, and disitlling the mixture at a temacid and distilling the mixture, wherein perature of 310 centigrade. the temperature of the mixture is raised The foregoing specification of our process progressively until the temperature of the for. the distillation of gem and colophony vapors during distillation reaches approxisigned by us this 3d day of May 1922. mately 310 centigrade.

2. A process for the distillation of a 3055? MARIE ALPHONSE CHEVAUER natural resin which comprises mixing there- PAUL BOURCET- with from 1 to 5% of tribasic phosphoric HENRI RENAULT- 

